I think it would be helpful to clarify what happens if consumers rejoin an empty group. I would presume that the expiration timer is stopped and reset back to offsets.retention.minutes when it is empty again but the KIP doesn't say.
On Wed, 2017-10-18 at 16:45 -0700, Vahid S Hashemian wrote: Hi all, I created a KIP to address the group offset expiration issue reported in KAFKA-4682: https://cwiki.apache.org/confluence/display/KAFKA/KIP-211%3A+Revise+Expiration+Semantics+of+Consumer+Group+Offsets Your feedback is welcome! Thanks. --Vahid ________________________________ This email and any attachments may contain confidential and privileged material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments) by others is prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete this email and any attachments. No employee or agent of TiVo Inc. is authorized to conclude any binding agreement on behalf of TiVo Inc. by email. Binding agreements with TiVo Inc. may only be made by a signed written agreement.
